Island



(No Model.)

BREAKER.

DRAWING MECHANISM .FOR SPINNINGAN'D TWISTING MAG-HINBS. &c.

No. 326,538. Patented Sept. 22, 1885.

WITNEEEZE. INVIN Z'UH." 1" l 1/ N. PETERS, Pholn'Lilhognpher Wafllmgkom D C- UNITED STATES ELIJAH E. BAKER, OF PROVIDENCE,

PATENT ()FFICE.

RHODE ISLAND, ASSIGNOR OF ONE- HALF TO MARK SHARP, OF SAME PLACE.

SPECIFICATION forming part of Letters Patent No. 326,538, dated September 22, 1885.

Application filed April 18, 1884.

To aZZ whom it may concern.-

Be it known that I, ELIJAH E. BAKER, of the city and county of Providence, and State of Rhode Island, have invented a new and useful Improvement in Drawing Mechanism for Spinning and Twisting Machines, 8rd, of which the following is afull, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

The object of my invention is to produce a drawing mechanism which shall be more durable and which shall operate more efficiently than those heretofore used.

My invention consists in the provision of a drawing mechanism having an endless belt operating under tension, and also in the peculiar and novel devices for creating the tension, all as hereinafter described and claimed.

In the accompanying drawings, Figure 1 illustrates my improvement in side elevation. Fig. 2 illustrates the same in front elevation.

In the said drawings, A designates the framepiece which supports the top-roll standards B. G designates the lower rolls, which are corrugated or ribbed upon their surfaces, and are mounted upon the shaft 0 in the usual manner.

D designates the top rolls, which are mounted upon the shaft d, and E E designate the tensi'on-regulating pulleys,which are mounted in half-bearings in adjustable brackets e.

F designates an endless belt,which runs over a top roll, D, and tension-pulley E. The ends of the top-roll shaft d are journaled in the half-bearings b, formed upon said standards B. In the upper end of each standard B is formed an elongated socket opening at one side of the standard, and arranged to receive a lug, g, which projects from an adjustable support,G. Each of these adjustable supports, two of which are similarly mounted upon each standard, is formed with an arm, 9, upon which rests one of the brackets e of the tension-roll.

b designates an adj usting-screw, which passes into the upper end of the standard and through ascrew-socket formed in the lug g, which projects from the adjustable support G.

H designates an arm,which is secured atits lower end to the frame-piece A. To the up- (No model.)

per end of this arm is attached a stem,h,which is screw-threaded at its upper end and carries a thumb-nut, h Surrounding this stem is a coiled tension-spring, which is confined between the thumb-screw and the upper end of a link, h, which is hooked at its upper end over shaft (1, and through which the stem h passes.

Now, the operation of the structure above described is as follows: The permanent mean tension upon the belt F'is produced by the adjustment of the support G through the medium of the screw b, and the variable tension is produced by tightening the spring h The fibers pass from the drawing-rolls between the lower and top rolls in the direction indicated by the arrow in Fig. 1.

The belt F is of leather or leath er-covered material, or of any composition suitable for the purposes of a top roll. The lower roll being ribbed or corrugated, it is necessary that the leather should not be repeatedly brought into contact with the corrugations at the same points. Heretofore this action has been prevented by making the top roll of greater diameter than the lower roll; but this arrangement was objectionable, because the guide-fingers were necessarily placed at a considerable distance from the meeting faces of the rolls in order to clear the larger roll. I prevent the constant wear in the same places by the lower roll by using the belt, and as the rolls are of the same diameter the guide-fingers may be set close to the meeting faces of the rolls.

The rolls may of course be of different diameters, if desired.

A l tendency to slip is avoided by my construction, and when the belt becomes worn another may be readily supplied.

Having thus described my invention, I claim 1. The combination,with the fixed rolls and the standards B, of movable supports mounted in said standards, connections for operating said supports, tension-rolls E, mounted upon said supports, a movable shaft, the top rolls thereon, the belts connecting rolls E with the top rolls, and attachments for adjusting the movable shaft carrying the top rolls, substanlink Iqhaving the hooked end, substantially xo tially as andfor thepurposes described. as set forth.

2. The combination, with the standards B, In witness whereof I have hereunto set my having the elongated sockets and the bearings hand. 5 b, the bottom rolls and their shaft, of the shaft d, the rolls D thereon, the supports G and ELIJAH BAKER rolls E thereon, the adjusting-screws b, the Witnesses: belts F, the frame A, carrying arm H, the M. F. BLIGH, stem h, having the nut 71 andspringh, and the I J. A. MILLER, Jr. 1 

